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G ood angular and vertex resolution , with h igh rate capability

G ood angular and vertex resolution , with h igh rate capability. 70 µm. 140 µm. 5 µm. 70 µm. 55 µm. 50 µm``. GEM foils. Typically 5 m m Cu on 50 m m kapton ~10 4 holes/cm 2. T he X position of a VDC T rack projected onto the GEM T his value is about +/- 0.1 (units are m).

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G ood angular and vertex resolution , with h igh rate capability

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  1. Goodangular and vertex resolution, with highrate capability

  2. 70 µm 140 µm 5 µm 70 µm 55 µm 50 µm`` GEM foils Typically 5mm Cu on 50mm kapton ~104 holes/cm2

  3. The X position of a VDC Track projected onto the GEMThis value is about +/- 0.1 (units are m)

  4. Correlation Plots

  5. ADC Spectrum (Entry<50000)Pedestal and Noise Suppressed

  6. ADC values vs Strips(=248) are fired event by event(<50000)

  7. The size of the reconstructed clusters in strips(140 micron strip pitch) events=50000

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